/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/SkeletalMeshModifiers/Public/SkinWeightModifier.h
Normalize weights on the specified vertex.
true if normalization was performed, false otherwise
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Weights") bool NormalizeVertexWeights ( const int32 VertexID )